Just got a flat pu from Elmar. This is the first time wiring up my own harneness. I'm confident my wiring is correct but there's definitely something wrong. I get almost no variation when adjusting the tone pot. I'm doing a one volume and one tone configuration with the flat pickup. From CB Gitty I bought a 10K Ohm linear-taper pot for the tone and a 250K audio-taper pot for the volume. I used a .022uf cap on the tone pot. I've got a feeling the tone pot and cap I'm using is a bad combination. Any ideas? Also, what's the difference in a volume pot and a tone pot ? I get a very slight treble to bass adjustment but it's almost undetectable. Thanks in advance for any help!!!
I have never heard of using a 10k pot on a guitar. The lowest I have tried is 50k with a single coil and it was pretty dark.The usual for a humbucker (Elmar's flatpup is a humbucker) is a 500k pot and .22 cap.
don't know whether you need it, but here's a great collection of wiring schematics of Ted Crocker:
As to the Flatpup.. although it's humbucker wound, it has the characteristics of a single coil (with almost no hum). I think it's because the impedance is lower than in a normal humbucker. For 2 reasons: less windings to stay as flat as can be and secondly because of a thicker wire than the ones that are used in machine built coils.
As to your tone pot Tim, I share the opinion of Skeesix
Do not know what they are thinking saying a 10k pot is used as a tone control pot on a guitar. Most magnetic pickups are in the 7k ohm range. Normally you would use 500k pots for volume and tone, generally log taper (the resistance changes similar to how we perceive volume) and linear taper (the resistance changes in % the same as the % change in rotation) for tone. 250k pots are also acceptable if you do not mind a bit of loss in treble (should not be a problem with the strings we use).
The tone control works to create a short across the pickup. The capacitor limits the amount of low frequencies that gets effected by the tone control. A 10k pot wide open is going to short out the amount of highs as a 500k pot at about 5% from fully rolled off. I would be surprised if you get many highs with the 10k pot. To see how much effect it has on the signal play something and then disconnect the pot. You should hear more highs.
A pot is a pot is a pot. A pot becomes a "tone pot" when you add the capacitor.
A lot of your LM386 9v amp circuits use a 10k pot for the volume knob, but even there they use a 100k pot for the tone.
As already stated by others, I would use a 250k pot with a .020uf or .022uf cap for single coils and a 500k pot with a .047uf cap for humbuckers on my tone controls.
Good luck with your build.